i think contagious is a good theme to start with here and for the ones i know who are having issues some of them are the cleanest tanks i know of and same thing water parameters are spot on and always are.
i dont doubt the bristle worms power but i had lots of clams and they never bothered mine.i bet theyd be on it for an essy meal if the chance arouse but they have plenty of food to get without having to fight through a clam to munch.
my buddys clams are looking good one day then not hot the next and dead the day after that.he lost all but 2 of ten since december im trying to help him out and all we can come up with is they all came from this city or close to. i heard from someone else then what wes heard about the "parasites"
possibly being to blame as everyone around here is losing them.
kinda glad i gave up the clam business while it was good

sorry to hear about your clams doug especially after you waited and took so much care into saving them
